Fair Value Measurements - Narrative (Details) (USD $)	3 Months Ended		9 Months Ended						3 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014 Other Long-term Obligations	Dec. 31, 2013 Other Long-term Obligations	Sep. 30, 2014 Accrued Liabilities	Dec. 31, 2013 Accrued Liabilities	Sep. 30, 2014 Ostial Solutions, LLC [Member]	Sep. 30, 2014 Ostial Solutions, LLC [Member] Developed technology
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other Asset Impairment Charges	$ 1,241,000	$ 8,100,000	$ 1,360,000	$ 8,200,000
Contingent consideration liability					1,400,000	2,300,000
Contingent consideration liability							365,000	274,000
Fair value reductions to contingent consideration liability	874,000	3,800,000
Intangible assets impairment charge	1,102,000	8,089,000	1,102,000	8,089,000					1,100,000
Fair value of intangible assets										$ 447,000